245/30R21 in Inches

A 245/30R21 tire has a 26.8-inch diameter, a 9.6-inch width, and is designed for a 21-inch rim.

In high flotation terms, this tire is labeled as 26.8x9.6R21.

245/30R21 Tire Size
245/30R21 Tire Size in Inches
245/30R21 Tire Circumference
752.9 revs/mile

245/30R21 Tire Overview

26.8 inches
Wheel Diameter
21 inches
Tire Width
9.6 inches
84.2 inches
Sidewall Height
2.9 inches
752.9 per mile

What does 245/30R21 mean?

245/30R21 tire size meaning in inches

245/30R21 is a tire size with the following dimensions:

  • 245 is the width of the tire in millimeters. This number also indicates the appropriate width of the rim on which the tire should be mounted.
  • 30 is the aspect ratio, which is the ratio of the tire's height to its width. This affects the tire's handling and ride comfort
  • R indicates the tire's construction type, meaning it has a radial construction. This provides stability and precision to the tire.
  • 21 is the diameter of the wheel in inches, on which the tire is to be mounted.

245/30R21 Tire Conversion

Tire Diameter26.8 in680.4 mm
Section Width9.6 in245 mm
Rim Height21 in533 mm
Sidewall Height2.9 in73.5 mm
Circumference84.2 in2137.5 mm
Revolutions752.9 revs/mile
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FAQ About 245/30R21 Tire

How tall is a 245/30R21 tire?

The height (or diameter) of a 245/30R21 tire is 26.8 inches

How wide is a 245/30R21 tire?

The width of a 245/30R21 tire is 245 mm, which is about 9.6 inches.

What size rim fits a 245/30R21 tire?

A 245/30R21 tire fits on a rim that is 21 inches in diameter.

What does the 30 in a 245/30R21 tire mean?

The 30 in a 245/30R21 tire refers to the aspect ratio, meaning the height of the tire's sidewall is 30% of its width.

Alternative Tire Sizes for 245/30R21

Typically, it's recommended to choose a tire with a diameter (height) within 3% of the original equipment manufacturer (OEM) tire size.

However, keep in mind that this is a general guideline and not an absolute rule.

Here are some tire sizes that are compatible with the 245/30R21:

Tire SizeDiameterRim
295/25R2126.8″ (Equal)21 x 10.0-11.0
235/30R2126.6″ (-0.7%)21 x n/a
235/35R2127.5″ (2.6%)21 x n/a
255/30R2127.0″ (0.7%)21 x 8.5-9.5
265/30R2127.3″ (1.9%)21 x 9.0-10.0
275/25R2126.4″ (-1.5%)21 x 10
275/30R2127.5″ (2.6%)21 x 9.0-10.0
305/25R2127.0″ (0.7%)21 x 10.5-11.5
325/25R2127.4″ (2.2%)21 x 11.5-12.5
375/20R2126.9″ (0.4%)21 x n/a